Pricipal Fullstack Engineer (Java,React,LLMs)

Principal Full-Stack Engineer (Java,React,LLMs)

We’re hiring a Principal Full-Stack Engineer to join one of the largest banking institutions in the U.S. - a highly complex, high-impact environment where engineering decisions truly matter.

This role is ideal for someone who combines deep backend expertise in Java with strong frontend capabilities in React, and hands-on experience working with LLMs (Claude preferred).

What you’ll be doing:

• Lead the design and development of scalable backend services in Java (Spring Boot)
• Build and optimize secure, high-performance APIs
• Contribute to and guide React-based frontend architecture
• Work hands-on with LLM/AI technologies (Claude or similar), integrating them into real-world applications
• Drive best practices across code quality, architecture, and performance
• Mentor engineers and support UI developers in delivering high-quality solutions
• Partner with stakeholders to translate business needs into technical execution
• Contribute to system design discussions, code reviews, and continuous improvement

What we’re looking for:

• Strong experience in Java backend development and server-side architecture
• Solid React experience on the frontend
• Hands-on experience with LLMs / AI tools and practical implementation
• Experience designing and building scalable, distributed systems
• Strong understanding of APIs, databases, and performance optimization
• Proven ability to lead technically and mentor others

Nice to have:

• Experience with GraphDB, Scala, or complex data processing systems
• Exposure to cloud platforms (AWS, Azure, or GCP)
• Familiarity with CI/CD pipelines and DevOps practices

The base salary range for this position is $200,000.00 – $220,000.00 annually. This range represents the good-faith minimum and maximum salary the Company believes it would pay for this role at the time of this posting.

Actual compensation will be determined based on factors such as experience, skills, qualifications, geographic location, internal equity, and business needs. This position may also be eligible for additional compensation, including bonuses, commissions, and/or benefits, as applicable.

Join Our Global Team: We invite you to apply for the position at RE Partners. Join us in shaping the future of business technology consulting and transforming the way organizations thrive in a digital world. As a diverse, woman-owned global business, we pride ourselves on keeping talent happy – our 7% attrition rate speaks volumes. Bring your talented friends along and earn a referral bonus

Equal Opportunity Employer: We are an equal opportunity employer and welcome applications from all qualified individuals regardless of race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, disability, or veteran status.